Image processing apparatus and method for binarizing a...

Details Image processing apparatus and method for binarizing a... Image processing apparatus and method for binarizing a...

2007-01-23

2007-01-23

Grant, II, Jerome (Department: 2627)

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

C358S465000, C358S401000, C358S406000

Reexamination Certificate

active

09669663

ABSTRACT:
It is judged for each pixel in an inputted multilevel image whether the pixel is a background pixel, and the pixel is locally binarized if it is judged not to be a background pixel. Then, it is judged whether the pixel belongs to a background or a stroke, such as of a character, ruled line, etc., and a binary image is generated.

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Otsu, N., “An Automatic Threshold Selection Method Based on Discriminant and Least Squares Criteria,” IEICE Trans., vol. J63-D No. 4.
Trier, O.D., et al., “Goal-Directed Evaluation of Binarization Methods,” IEEE Trans. on Pattern Anal. and Machine Intell., vol. 17, No. 12.
Korean Office Action mailed Jun. 29, 2006 in a corresponding Korean Patent Application.

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